Banana Bread

Grandma's Banana Bread Loaf (Ruth Baird, Warren's Grandma)

1/2 cup margarine 110g
1 cup sugar 205g
2 eggs well beaten
1 cup mashed bananas - ~240g
1 3/4 cups flour 260g
2 tsp baking power
1 tsp vanilla
1 tsp soda (in milk)
4 tbsp sour milk 60g milk 5g vinegar
1/4 tsp salt

1/2 cup chocolate chips

Bake 60m in loaf pan at 350F